var fDesc=new Array(); fDesc[0] = "With Nav Mensurations you can find the area/volume of different solids and planes

Solids
Cube, Prism, Hexagonal Prism, Octagonal Prism, Cylinder, Hollow Cylinder, Square Pyramid, Hollow Sphere, Frustum of Pyramid, Frustum of Cone, Sphere, Cone, Segment of Sphere, Zone of Sphere

Planes
Triangle, Rectangle, Square, Trapezium, Parallelogram, Hexagon, Octagon, Circle, Annulus/Hollow, Sector, Segment, Fillet, Sector of Hollow circle, Ellipse"; function tShowHide(id, show) { var s = document.getElementById("desc"); if ((s.innerHTML.length<=212 || show==1) && show!=2) { s.innerHTML = fDesc[id]; if (document.getElementById('m1')) document.getElementById('m1').style.display='none'; if (document.getElementById('m2')) document.getElementById('m2').style.display='none'; if (document.getElementById('more_txt')) document.getElementById('more_txt').style.display='inline'; } else { s.innerHTML = ''; } }